Homework Help: physics

Posted by john on Friday, November 19, 2010 at 4:37pm.

The earth orbits the sun once a year (3.16 107 s) in a nearly circular orbit radius 1.50 1011 m. With respect to the sun, determine the following.
(a) the angular speed of the earth

(b) the tangential speed of the earth

(c) the magnitude and direction of the earth's centripetal acceleration magnitude
direction
i solved for a and got 1.988E-7 and for b got 2.98E4
but cant get c

physics - bobpursley, Friday, November 19, 2010 at 6:51pm
centripetal acceleration= w^2*r

you found w in part a. r is given.

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